Abstract: The knowledge-based economy is a new economic pattern after industrial economy.It bases on knowledge and information.Agricultural economy and industrial economy depend on the natural resources.They consumed the natural resources and poisoned the circumstances when they promoted an increase in economy.Indeed they endanger the development of the human beings.The society and economy of the human beings would achieve sustainable development if it walks up to knowledge-based economy and establishes knowledge industry.There are many holdbacks which block sustainable development in China.And it is very urgent that china grows up her own knowledge-based economy.